Lamp-mantle.



. P TENT 211mm s, 1905 E. J. SELLEY.

LAMP MANTLE.

APPLICATION FILED F1112. 1905.

WITNESSES zggwroze.

' ATTORNEY. 1 I

Patented June 6, 1905.

PATENT OFFICE.

EDWIN J. SELLEY, OF NEW YORK, N. Y.

LAMP-MANTLE.

SPECIFICATION forming part of Letters Patent No. 791,826, dated June 6,1905.

Application filed February 2, 1905. Serial No- 243,780.

To all whom it may concern: I

. Beit known that I, EDWIN J. SELLEY, of the city, county, and State ofNew York, have invented a new and Improved Lamp-Mantle, of which thefollowing is a full, clear, and exact description.

My invention relates to improvements in mantles such as are used withincandescent gas-lamps and other lamps and in which the mantle is heatedto incandescence. These mantles are generally made out of fabric whichis treated in a way to destroy it and form a material to stand the hightemperature of gas or other flame and which is also made in a way toglow under the influence of heat. In subjecting them to the necessarytreatment, however, they are rendered exceedingly fragile, and the lifeof the ordinary mantle is therefore short.

The object of my invention is to remedy this defect and produce a mantlehaving the usual characteristics of lamp-mantles, but having internalbraces arranged so as to make the mantle much stronger, and, further, toconstruct and arrange braces so that a series of longitudinal flues isprovided to the end that the draft is divided and a more even heat and abetter incandescence produced.

To these ends my invention consists of a mantle the structure of whichis hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar figures of reference indicatecorresponding parts in all the views.

Figure 1 is a side elevation in outline of a mantle. Fig. 2 is across-section of the mantles. Fig. 3 is a cross section showing aslightly-modified arrangement of the partitions. Fig. 4 is across-section ofstill another modification of the partitions, and Fig. 5hows the partitions arranged in another form.

The mantle is, so far as its general shape and appearance are concerned,precisely like the ordinary mantle of commerce, being open at the ends,but with the top reduced. To bring about the desired result, I stiflenthis structure by providing internal partitions.

In Fig. 2 I have shown a partition forming a central flue 13 andconnected by partitions or braces 14 with the outer shell 11.

In Fig. 3 the mantle is provided with the internal braces or partitions,making a particularly strong construction. The concentric flues 13 areplaced relatively near the outer shell 11 and in which the short radialpartitions 14: connect the partitions 13 together and also brace theshell 11 with reference to the other partitions13.

Fig. 4cillustrates curved partitions 12, forming four flues ofdissimilar size, and the partitions are oppositely curved.

In Fig. 5 I show a form in which the braces make up a shell that engagesthe outer shell 11 at points in its periphery. In all cases the bracesor partitions do not extend quite to the bottom of the mantle 10, asshown by dotted outline in Fig. 1, thus leaving the bottom part free toslip over a burner.

It will thus be seen that I have devised a mantle that is provided withpartitions and braces that form a central flue and surrounding 'flues,andjthese may be arranged in avariety of ways without aflecting theprinciple of the invention.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent 1. A. lamp-mantle comprising an outer shell, aconcentric shell inside the outer shell and separated therefrom, andbraces connecting the outer and inner. shells.

2. Alamp-mantle comprising an outer circular shell, an inner shellseparate from the outer shell, and braces connecting the two shells.

3. A lamp-mantle, comprising a shell, and braces arranged inside theshell to form a multiplicity of flues, one of the flues being arrangedapproximately concentric to the shell.

EDWI J. SELLEY.

Witnesses: i l

R. H. MILLER, JOHN PARKER.

